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4 years ago

Please help me and show your work! 7th grade math

Mathematics

2 answers:

shutvik [7]4 years ago

4 0

So you have 4 rectangles down the middle consisting of 4 (6ft x 4ft) and 2 squares on the side of 4ft x 4ft.
So you would do:
4(6 x 4) + 2(4 x 4) to get your answer. Which is 128ft.

Hope this helps! :)

Anna007 [38]4 years ago

4 0

Answer:

128ft

Step-by-step explanation:

So you have 4 rectangles down the middle consisting of 4 (6ft x 4ft) and 2 squares on the side of 4ft x 4ft.

So you would do:

4(6 x 4) + 2(4 x 4) to get your answer.

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antiseptic1488 [7]

78 units squared add together 27.5+12+22+16.5 and you’ll get your answer for triangles it’s 1/2bh and for the rectangles it’s just bh. hope this helped!

6 0

4 years ago

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A random sample of 20 houses selected from a city showed that the mean size of these houses is 1880 square feet with a standard

azamat

Answer:

Option C

Step-by-step explanation:

Given that for a random sample of 20 houses selected from a city showed that the mean size of these houses is 1880 square feet with a standard deviation of 320 square feet.

X, the sizes of houses is Normal

Hence sample mean will be normal with

Mean = 1880

and std dev = $\frac{320}{\sqrt{20} } \\=71.5542$

For 90% confidence interval critical value for t with degree of freedom 19 is

1.328

Confidence interval upper bound

= mean + margin of error

= $1880+1.328*71.55\\=1975$

Option C is right

3 0

4 years ago

Help me i dont understand this

Dennis_Churaev [7]

Answer:

there monthly budget is $4000

Step-by-step explanation:

if 600 is 15% then there is 85% of there budget left so in order to find how much is 1% then 600/15=40 so $40 = 1% so 1%x100=100% and 40x100=4000 so 100% of there budget is $4000

hope this helps have a blessed day :)

3 0

3 years ago

Nancy bought a mobile phone marked at $720 at a discount

m_a_m_a [10]

20% of $720( original cost)= $144 (discount)
$720- $ 144 = $576 (discounted cost)
5% tax = $36 (tax payed)
tax + cost of phone = $612 (total of both tax and discounted cost)

20% of $612=$122.40 (deposit cost?)

7 0

3 years ago

PLEASE HELP!

finlep [7]

Answer:

Step-by-step explanation:

7 0

4 years ago

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